KaiOS is based on the Firefox OS open-source project. 

We have made the source code available at https://github.com/kaiostech

KaiOS is not a device manufacturer. Therefore, we can't publish the parts of the code owned by our partners. For more information about these parts of the code, please contact the device manufacturer. 

If you are interested in partnering with KaiOS, please select “Partnership opportunities” in our contact form to contact our business development team.